A device for determining a correlation value from a correlation between a first sequence of values with complex values and a second sequence of values with complex values has a correlation means for determining a first partial correlation value from a correlation between a first subset of the first sequence of values and a first subset of the second sequence of values, and for determining a second partial correlation value from a correlation between a second subset of the first sequence of values and a second subset of the second sequence of values. The device further has a processing means for determining a processed partial correlation value with an adjusted phase term from the first partial correlation value or the second partial correlation value, and a calculating means for determining the correlation value using the processed partial correlation value.